Demountable tire.



l. H. COFFEY. 1a. & J. HJCOFFEY. DEMOUNTABLE TIRE.

APPLICATION FILED APR.22. t9\5- m lgw. Patented Dec. 7, 1915.

s e TlEti JOSEPH H. COFFEY, 31%., AND JOSEPH H.

' ATENT I GOFFEY, 0F TORONTO, ONTARIO, CANADA,

ASSIGNOR$ 0F ONE-HALF TO ,GUTTA PERCHA AND RUBBER; LIMITED, OF TORONTO,

ONTARIO, CANADA.

DEMOUNTABLE TIRE.

Application filed April 22, 1915. SerialNo. 23,183.

To all whom it may concern Be it. known that we, JOSEPH HERBERT CoFFEY, Jr., and JOSEPH HERBERT CO'FFEY, of the city of Toronto, in the county of York, Province of Ontario, Canada,.subjects of the King of Great Britain, have invented certain new and useful Improyements in Demountable Tires, of which the following is a. specification.

This invention relates particularlyto solid rubber truck tires in which the rubber tire" is carried by an annular metal base, which it is required shall be adapted to he slipped on or oil the wheel felly, and our object is to devise a construction which will enable a the said annular base to be easily slipped on or off, and which will enable the said annular base to be tightly clamped on the felly provided with our improved tire Fig. 2 is a side elevation of part of the rim of the' wheel provided with our improved tire Fig: 3 a cross section of the same; and Fig. .4: a plan view partly in section with the rubber tire removed andthe side flanges laterally displaced on the felly.

In the drawings like numerals of reference indicate corresponding parts in the different figures. p

'1 is the wooden felly and 2 the metal band secured to the outer periphery of the felly.

3 is the annular metal'tire baseon'whieh is secured the solid rubber tire i in any ordinary manner. This annular tire base is of such a size as to slip easily over the telly band 2 and is radially divided, preferably at four different points as shown, so .that it may be expanded and contracted circumferentially to tighten it on the felly band or to free it therefrom.

55 are side flanges adapted to be detachably connected with the sides of the felly by means of the bolts 6. Projectionand-slot connections are .formed between Specification of Letters Patent.

of the tire in order said flanges and the annular tire base adapted, as the sidev flanges are drawn to place against the. sides of the the base segments toward one another and thus Preferably pro ections are formed on the tire base and the slots in the side flanges. A preferable arrangement is shown in the drawings, 7 being projections, which are located on each segment at each side of each slit at each side of the tire. Slots are formed in the side flanges each adapted to receive a" pair of projections as shown partieularly in Figs. 2 and 4-1. The projections and slots are so shaped that a e the flanges are drawn inwardly against the felly, the tire base is contracted circumferentiallv. Preferably, the endsof the projections remot e from the adjacent slit are beveled. as

shown, an d the ends of the slot are preferably s milarly inclined. The projections must fit the slots somewhat loosely radially such width that they never that we are assured that tion of the said base will to permit of its being firmly the wheel periphery.

suiiicient contracbe provided for clamped against clamp them on the wheel periphery.

to permit of the slight felly, to draw -the Tliemode of operation in mounting and demounting the tire will be readily understood from the above description.

What we claim as our invention is '1. A wheel fel'ly in combination with an annular tire base formed insegments radially separated by slits but otherwise forming a continuous unbroken support for a tire; annular side flanges removably secured to'opposite sides'of the felly and overlapping the edges of the tire base: a projection on each segment at each side of each slit at each side of. the tire, each having its end remote from the slit beveled,

90 the segments of the annular tire base areof qu te close up so in the side flanges, and the projections and slots being adapted as.the side flanges are drawn to place against the sides of the telly to draw the tire base segments toward one another and thus clamp them on the wheel periphery. Signed at Toronto, Canada, this 13th day of April, 1915, in the presence of the two undersigned witnesses.

JOSEPH H. ()OFFEY, Jn. JOSEPH H. CO FEE Y. \Vitnesses E. I. HALL, A. M. LEWIS. 

